* fix: apply automatic eslint fixes
* lint: allow hashbang comment for tiddlywiki.js
* lint: first back of manual lint fixes for unused vars
* lint: added more fixes for unused vars
* lint: missed files
* lint: updated eslint config with selected rules from #9669
Add support for skipping an entire tiddler if a particular column is
blank
Add support for reading a row by column, making each of the columns
into a fieldname.
Also significantly refactored the code to break up the main, monolithic
function.